Weighing-scale.



B. M. KENT. WEIGHING SCALE.

APPLICATION FILED AUG. 4. 1911.

1,064,971, Patented June 17, 1913.

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B. M. KENT. WEIGHING SCALE. APPLIOATION FILED AUG. 4,1911

1,064,971 I Patented June 17, 1913.

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mmnummmullllluj i B. M. KENT. WEIGHING SCALE.

APPLICATION rum) AUG. 4, 1911.

1,064,971 Patgnted June 17, 1913.

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port for a pair of forwardly BURTON M. KENT, OF CHICAGO, ILLINOIS,

COMPANY, OI CHICAGO, ILLINOIS, A

ASSIGNOR '10 AMERICAN GUTLERY com-cannon or rumors.

WEIGHING-SCAI4E Specification of Letters Patent.

Patented June 17, 1913.

Application filed August 4, 1911. Serial No. 642,845.

To all whom, it may concern.

Be it known that I, BURTON M. KENT, a citizen .of the United States,residing at Chi cago, in the county of Cook and State of Illinoi haveinvented a new and useful Im provement in lVeighing-Scales, of which the1 following is a specification.

My invention relates more particularly to weighing-scales of the springcontrolled type; and my object is to provide a scale of the typereferred to which will be of simple construction .and which will operateto .acourately weigh articles regardless of the position in which theyare placed on the weighing platform.

Referring to the accompanying drawings,-Figure 1 is. a front view of aspringscale of the slanting dial type constructed in accordance with myinvention. Fig. 2 is a section taken at the line 2 on Fig. 3 and viewedin the direction of the arrow. Fig. 3 is a section taken at theirregular line 3 on Fig. 2 and viewed in the direction of the arrow.Fig. 4 is a bro-ken, enlarged, section taken at the line 4 on Fig. 2 andviewed in the direction of the arrow; and Fig. 4 a section taken at theline 4 on Fig. 2 but viewed in the direction opposite to the arrow.

The casing of the scale is represented at 5 and is provided at its frontend with a slanting dial 6 such as is usually provided in constr-uctionsof this character. The platform which serves as a support for thearticles to be weighed is represented at 7 and is carried on the upperend of a vertically reciprocable standard 8 which extends through anopening 9 in the top of the casing,-and is of yoke-shape at its lowerend. Secured in the casing 5 at the back end thereof is a verticallydisposed frame 10 which forms a supvers l1 and 12, which are pivotedthereto at their rear ends, as indicated at 13 and 14 respectively,these levers having pivotal connections, as indicated at 15 and 16 resectively, with the standard 8 at the forward extrernity of the lever 11'and intermediate the ends of the lever 12. The lever 12 at its rear end,at which it is connected with the frame 10 and standard 8, is in theform of a frame, the forward end of this lever being a bar section 17which terminates in a plate section 18. The spring for yieldinglyholding the platform 7 in raised position is reprewhich lies within aslot 24 in the bar section 17 of the lever 12 and extends intoengagement with a p secured in the walls of this slot. It will beextending leally of the standard 8, and

sented at 19, this spring being provided at 1ts upper end with athreaded extension 20 which passes through an opening 21 in the top ofthe casing 5 and engages with an adjusting-nut 22 which seats againstthe top of the casing and is provided for permitting regulation of thespring. The lower end of the sprlng 19 is provided with a hook 23longitudinally-extending manifest from the foregoing description thatthe spring 19, by being connected with the lever 12,. servestmyicldingl-y maintain the platform 7 in raised position.

The face of the extension 18 is beveled in opposite directions asindicated at 26 and 27 and carries a stud 28 located at the intersectionof these beveled surfaces. J ournaled on the stud 28 is an upwardlyextending rack-bar 29 provided with teeth 30 which engagewith a pinion31 fixed'on'theshaft 32 carrying a pointer 33. The inner end of theshaft 32 is journaled in a strap-plate 34 secured to the rear face ofthe dial 6, the tooth portion of the rack 29 lying within this strapsection. The rack 29 is provided with a lateral weighted extension 35and the point at which this rack is pivoted on the stud 28 is such, asrepresented, as to cause the teeth of the rack 29 to be maintained inmesh with the pinion 31 at all times.

The opening in the rack 29 through which the pin 28 extends iscountersunk on its rear inthis opening. This feature of theconstruction, in connection with the beveled faces of the plateextension 18, permits of a relative rocking movement of the rack on thelever 12 during the movements of these parts the weighing operation,thus preventing the binding -.of the rack with the pinion. The pivotalconnection of the rack 29 with the lever 12 and the connection of thespring 19 with this lever extend mediof the pivotal connections of thelever 12 with the frame 10, and this feature of the construction,combined with that of connecting the spring with the lower lever 12,serves to prevent any rocking movement of the standard 8, producedbecause of lost motion in the joints of the mechanism, by placing anarticle in a non-central position on the platform, from loo . movement,I provide a bearing 36, Fig. 3, in

the strap-section 34, against which' the-rack moves in the operation ofthe scale, this bearing-being preferably in the form of a lug cut fromthe strap 34 and bent' inwardly as represented and having a roundedbearing face.

WhatI claim as new and desire to secure by Letters Patent is I 1. In aweighing-scale, the combination of a casing provided with a dial, asupport for the article to be weighed formed at its lower end withspaced members, pivotally supported lever mechanism in said casingformed of a single upper link pivotally connected with said caslng andwith said supportion with spaced members, said lower port, and a lowerlink formed at its rear link being pivoted at its spaced members to saidcasing and pivotally connected at its spaced members with the spacedmembers of said support, a coiled spring connected at its upper end withsaid casing, and at its lower end with said lower link between saidsupport and said dial, and means pivo-tally connected with the forwardend of said lower link, for moving the indicator for indicating on saiddial the weight of the article on said support. I

2. In a weighing scale, the combination of a casing provided with adial, a support for the article to be weighed formed at. itslower endwith spaced members, pivotallysupported lever-mechanism in said casingformed of a single upper link pivotaly connected with said casing andwith said support medially of the said spaced members of the support,and a lower link formed of a frame-section at its rear end, affordingspaced members, and a bar-section at its forward end extending centrallyof said framesection, said lower link being pivoted at its rear end tosaid casing at its spaced members and pivo-tally connected at its spacedmembers intermediate its ends with the spaced members of said support, acoiled spring connected at its upper end with said casing and at itslower end with the bar-section of said lower link medially of the spacedmembers of thelatter and between said support and said dial, and meansoperatively connected with the forward end of said barsection, forindicating on said dial the weight of the article on said support.

3. In a weighing-scale, the combination of a casing provided with adial, a support for the article to be weighed, lever-mechanism pivotedon said casing and having, pivotal connection with said support, meansfor yieldingly holding said support and levermechanism in raisedposition, a shaft, a pinion and point-er on said shaft, a rack pivotedloosely to said lever-mechanism to permit said rack to tilt on saidlever-mechanism forwardly, backwardly and sidewise and engaging withsaid pinion, and means tending to rock said rack on its pivot towardsaid pinion to hold the rack in engagement with wardly, a guide-memberagainst which saidrack bears in its movements, said rack being weightedat the side thereof relative to its pivot, opposite to that carrying theteeth of the rack to cause saidrrack to be held at all times inengagement with the teeth on the pinion. H

BURTON M. KENT. In presence of-- L. HEIsLAn, R. SCHAEFER.

